Could this be my problem?, Anybody else old enough to remember "Heathkit"? Options

[Porsche Rescue]

I posted last fall about my problem: '70 D-jet, extremely hard to start, requires much throttle goosing to keep it going. Once it is fully warmed up it runs great.
I assumed FI problem and have checked everything. All seems OK. Bleysing and others suggested weak spark. Good enough for warm engine, but inadequate for cold. (Frankly, ignition is the weakest category in my 914 skillset). I have checked all connections, grounds etc. All seem OK.

Then, a light bulb! My car has a Heathkit, vintage capacitive discharge ignition (I have no clue how it works or what it does, see skillset deficiiency above). I do know it is over 30 years old. Could that be my problem? Can I just disconnect the 4-wire harness from the coil? Or do I need to do some other re-connecting.



Here is the earlier thread on my problem:

http://www.914world.com/bbs2/index.php?sho...p;hl=hard+start

All ideas welcome!

[r_towle]

lean idle condition.
Lean makes it run like crap when cold.
Lean means vacuum leak.

Picture putting 400 holes in your house about the size of a dime.
Now add all those holes up...they look like an open window..wide open.

From what I have found...and its just me...there are alot of vacuum leaks on these motors just due to age or the rubber, and age of the intake gaskets.
When those are added up together, its one big huge vacuum leak.
So, it does take time, and if your methodical, it works.
I resealed my intake runner last year...made a world of difference.

You can use an ohm meter...or just look at it...the TPS can only be set in one position.